Abstract
With the rapid development of the LED industry, the reliability and performance of LED driver power supplies have become crucial factors affecting the quality of LED products. Led Driver Testing Equipment plays a core role in ensuring the compliance and stability of LED drivers. This paper takes the LISUN LS2090 LED Power Driver Tester as the research object, systematically introduces its design standards, functional modules, technical specifications, and supporting systems. Through detailed data tables and practical application scenarios, it analyzes the tester’s ability to meet industry standards and its value in improving testing efficiency. The research shows that the LISUN LS2090, as a professional Led Driver Testing Equipment, can comprehensively measure multiple key parameters of LED drivers, fully complying with international and national standards, and providing strong technical support for the production and quality inspection of LED driver power supplies.
1. Introduction
In the LED product ecosystem, the driver power supply is equivalent to the “heart” of the LED, responsible for converting AC or DC input into stable electrical energy suitable for LED modules. The performance of the driver directly determines the service life, luminous efficiency, and safety of the LED. To ensure that LED drivers meet market requirements and regulatory standards, Led Driver Testing Equipment has become an indispensable tool in the production, R&D, and quality control links of enterprises.
Led Driver Testing Equipment refers to specialized instruments that measure, analyze, and evaluate the electrical performance, safety, and reliability of LED driver power supplies. It can simulate different working environments of LED drivers, detect parameters such as input/output characteristics, harmonic distortion, and start-up performance, and judge whether the driver meets the specified standards. Among the many Led Driver Testing Equipment products on the market, the LISUN LS2090 LED Power Driver Tester stands out for its comprehensive functions, high precision, and compliance with multiple international standards. This paper will conduct an in-depth analysis of the LISUN LS2090, exploring its role and application value in the field of Led Driver Testing Equipment.
As a professional Led Driver Testing Equipment, the LISUN LS2090 is designed and manufactured in strict accordance with international and national standards for LED driver testing, ensuring the accuracy and authority of test results. The core compliance standards are as follows:
The International Electrotechnical Commission (IEC) released IEC 62384:2006, titled “DC or AC supplied electronic control gear for LED modules – Performance requirements”. This standard specifies the performance requirements for electronic control devices (i.e., LED drivers) powered by DC or AC for LED modules, including input/output characteristics, harmonic current limits, and temperature rise. The LISUN LS2090 fully aligns with the test indicators of this standard, ensuring that the test results of LED drivers are recognized globally.
In China, the national standard GB/T 24825-2009, which is equivalent to IEC 62384:2006, is implemented. It stipulates the performance requirements and test methods for LED driver power supplies in the Chinese market. The LISUN LS2090, as a domestic Led Driver Testing Equipment, strictly follows this standard, making it applicable to the quality inspection and certification of LED drivers in the Chinese market.
For users with higher testing requirements, LISUN provides the LS2090-IEC version. This version, with additional software (requiring extra cost), can fully meet the requirements of EN/IEC 61000-3-2:2019. This standard focuses on the limits of harmonic current emissions from electrical equipment, further expanding the application scope of the LS2090 in Led Driver Testing Equipment, especially for products exported to the European market.
LS2090_LED Test Driver
The LISUN LS2090, as a comprehensive Led Driver Testing Equipment, integrates seven core functional modules, covering all key test items of LED driver power supplies. Each module has clear test objectives and technical parameters, enabling all-round detection of LED drivers.
This module is used to test the electrical characteristics of the LED driver when it is connected to an AC power source. It can measure input voltage, current, power, power factor, and power frequency, which are essential for evaluating the efficiency and energy consumption of the driver under AC input conditions.
For LED drivers powered by DC (such as those used in automotive or solar LED systems), this module tests the input voltage, current, and power. It helps to ensure that the driver can work stably under different DC input conditions.
Some special LED drivers (e.g., for certain industrial LED lighting) have AC output. This module measures the lamp voltage, lamp current, and lamp power of the driver’s AC output, ensuring that the output meets the requirements of the matched LED modules.
Most LED drivers have DC output. This module not only measures the basic output voltage, current, and power but also detects the ripple current. Ripple current is a key factor affecting the service life of LEDs; excessive ripple current will accelerate the aging of LED chips.
The start-up process of the LED driver is critical for the stability of the LED system. This module records the change curve and data of the lamp voltage and lamp current within 0-2 seconds after the driver is started, helping to evaluate whether the driver’s start-up is smooth and whether there is an overcurrent or overvoltage impact.
Harmonic distortion of the LED driver will affect the quality of the power grid and interfere with other electrical equipment. This module tests the total harmonic distortion and the harmonic components of 0-50 times, as well as parameters such as wave ratio, initial phase angle, peak phase angle, and phase difference, ensuring that the driver’s harmonic emissions meet the standard requirements.
The displacement factor is an important indicator of the power quality of the LED driver, reflecting the phase difference between the input voltage and current. The LISUN LS2090 is an upgraded version of the WT2080, adding the DF testing function, which further improves the comprehensiveness of power quality testing.
4. Technical Specifications of LISUN LS2090 Led Driver Testing Equipment
To accurately evaluate the performance of the LISUN LS2090 as a Led Driver Testing Equipment, this section details its technical specifications for each functional module through a table. The parameters in the table are derived from the official product information of LISUN (https://www.lisungroup.com/products/led-test-instruments/led-power-driver-tester.html), ensuring authenticity and accuracy.
Table 1: Technical Specifications of LISUN LS2090 Led Driver Testing Equipment
| Functional Module | Measured Parameters | Range Specifications | Special Notes |
|---|---|---|---|
| Input Characteristics Test (AC) | Voltage, Current, Power, Power Factor, Power Frequency | – Voltage: 3~300 V (CF=1.67) – Current: 5mA ~ 2.7A (CF=3) – Power: 0.015~800W – Power Factor: 0.000~1.000 – Frequency: 45Hz~65Hz (fundamental); 45Hz~5kHz (narrowband); 45Hz~1MHz (broadband) | CF (Crest Factor) is a key parameter for measuring the waveform distortion of voltage/current |
| Input Characteristics Test (DC) | Voltage, Current, Power | – Voltage: 3~500V – Current: 5mA~8A – Power: 0.015~4000W | Suitable for testing DC-powered LED drivers (e.g., automotive LEDs) |
| Output Characteristics Test (AC) | Lamp Voltage, Lamp Current, Lamp Power | – Lamp Voltage: 3~300V (CF=3) – Lamp Current: 5mA~2.7A (CF=3) – Lamp Power: 0.015~800W | For testing LED drivers with AC output |
| Output Characteristics Test (DC) | Lamp Voltage, Lamp Current, Lamp Power, Ripple Wave Current | – Lamp Voltage: 3~500V – Lamp Current: 5mA~8A – Lamp Power: 0.015~4KW – Ripple Wave Current: 5mA~2.5A | Ripple current directly affects LED service life |
| Output Start Characteristics Test (DC) | Lamp Voltage Change Curve, Lamp Current Change Curve, Corresponding Data | – Lamp Voltage: 3~500V – Lamp Current: 5mA~8A – Test Duration: 0~2 seconds | Records dynamic start-up process to avoid start-up impact |
| Harmonic Testing | Total Harmonic, 0~50th Harmonic Components, Wave Ratio, Initial Phase Angle, Peak Phase Angle, Phase Difference | Tests up to the 50th harmonic component | Complies with harmonic limits in IEC 62384:2006 and GB/T 24825-2009 |
| Displacement Factor (DF) Testing | Displacement Factor | No specific range specified (tests based on actual input conditions) | Added function compared to the previous model WT2080 |
A complete Led Driver Testing Equipment system requires not only the core tester but also supporting equipment to simulate the actual working environment of the LED driver. The LISUN LS2090 usually works with two key supporting devices, forming a closed-loop testing system.
The LED driver needs a stable and adjustable AC power source during testing to simulate different grid voltage conditions (such as voltage fluctuations in different regions). The LSP-500VARC pure sine AC power source can provide a constant and adjustable standard AC power supply for the tested driver. Its pure sine wave output ensures that the input power source itself has no waveform distortion, avoiding interference with the test results of the LS2090. This supporting device enables the LS2090 to accurately test the input characteristics of the driver under different AC voltage and frequency conditions.
In the output characteristic test of the LED driver, it is necessary to simulate the load of the LED module. The M9822 DC electronic load can simulate the electrical characteristics of different LED modules (such as different current and voltage requirements). By adjusting the parameters of the electronic load, the LS2090 can test the output performance of the driver under different load conditions, such as whether the output voltage/current remains stable when the load changes. This supporting device makes the output test of the LS2090 more in line with the actual application scenario of the LED driver.
The LISUN LS2090 is equipped with dedicated testing software that can run on mainstream Windows operating systems, including Win7, Win8, Win10, and Win11. The software has the following functions:
• Data collection and processing: Real-time collection of test data from the LS2090 and automatic calculation of key indicators (such as power factor, harmonic distortion rate).
• Curve display: Visual display of the change curve of parameters such as voltage and current (especially in the start-up characteristic test).
• Report generation: Automatic generation of test reports, which can be saved or printed for product certification and quality records.
• Parameter setting: Allows users to set test parameters (such as test duration, harmonic test range) according to different standards or test requirements.
The software’s user-friendly interface and powerful functions reduce the difficulty of operation for testers and improve the efficiency of Led Driver Testing Equipment.
The LISUN LS2090, as a professional Led Driver Testing Equipment, is widely used in various links of the LED industry, providing reliable testing support for enterprises.
In the R&D stage of LED drivers, engineers need to continuously adjust the circuit design and component parameters to optimize the performance of the driver. The LS2090 can quickly test the input/output characteristics, harmonic performance, and start-up performance of the prototype driver, helping engineers find design defects (such as excessive ripple current, low power factor) and make targeted improvements. For example, if the harmonic test shows that the 3rd harmonic component of the driver exceeds the standard, engineers can optimize the power factor correction (PFC) circuit of the driver.
During the mass production of LED drivers, enterprises need to conduct 100% or sampling inspection of the products to ensure that each driver meets the quality standards. The LS2090’s efficient testing speed and automatic data processing function make it suitable for mass production lines. Testers only need to connect the driver to the tester and supporting equipment, and the system can automatically complete the test and judge whether the product is qualified. This not only improves the inspection efficiency but also avoids human errors in manual testing.
Before LED drivers are put on the market, they need to pass relevant certification tests (such as CE certification in Europe, CCC certification in China). The LISUN LS2090, as a Led Driver Testing Equipment complying with IEC 62384:2006 and GB/T 24825-2009, can provide test data that meets the certification requirements. For products exported to Europe, the LS2090-IEC version can also test the harmonic current emissions in accordance with EN/IEC 61000-3-2:2019, helping enterprises obtain international certifications smoothly.
LISUN has been selling the LS2090 for more than 10 years and has accumulated a large number of after-sales questions and answers. When users encounter problems in using the LS2090 (such as abnormal test data, software operation errors), they can refer to the official FAQ page (linked on the product detail page) to solve most problems by themselves. LISUN also continuously updates the FAQ content, ensuring the long-term and stable operation of the Led Driver Testing Equipment and reducing the maintenance cost for users.
The LISUN LS2090 is an upgraded version of the WT2080. Compared with the WT2080, the LS2090 has obvious advantages in function and performance, further enhancing its competitiveness in the Led Driver Testing Equipment market.
The most significant upgrade of the LS2090 compared to the WT2080 is the addition of the DF testing function. The displacement factor reflects the phase difference between the input voltage and current of the driver. For the power grid, a low DF will increase the reactive power loss of the power grid and reduce the power transmission efficiency. In the current context of increasing emphasis on energy conservation and environmental protection, the DF indicator has become an important part of power quality testing. The addition of this function makes the LS2090 more comprehensive in testing power quality, meeting the higher requirements of the market for LED drivers.
• Comprehensive Functions: The LS2090 covers all key test items of LED drivers, from input/output characteristics to harmonic and DF testing, eliminating the need for users to purchase multiple testing instruments, reducing equipment investment costs.
• High Compliance: It complies with multiple international and national standards, making it applicable to global markets. The optional LS2090-IEC version further expands the scope of application.
• Stable Performance: With more than 10 years of market verification, the LS2090 has a mature and stable design, and the after-sales support system is perfect, ensuring the long-term and reliable operation of the equipment.
• Easy Operation: The supporting software runs on mainstream Windows systems, with a simple interface and automatic data processing and report generation functions, reducing the technical threshold for testers.
8. Conclusion and Outlook
As a professional Led Driver Testing Equipment, the LISUN LS2090 LED Power Driver Tester has become an important tool in the LED industry with its comprehensive functions, high compliance, and stable performance. It strictly follows international and national standards such as IEC 62384:2006 and GB/T 24825-2009, and can accurately test multiple key parameters of LED drivers. The matching of supporting equipment (LSP-500VARC AC power source, M9822 DC electronic load) and user-friendly software further improves the testing efficiency and applicability of the system.
In the future, with the continuous development of the LED industry, the performance requirements of LED drivers will be higher (such as higher efficiency, lower harmonic emissions, and wider working temperature range), and the functions of Led Driver Testing Equipment will also need to be continuously upgraded. It is expected that LISUN will further optimize the LS2090 series, such as increasing the test range of parameters, improving test accuracy, and integrating intelligent functions (such as IoT connection for remote monitoring and data analysis), to meet the evolving market needs. At the same time, with the promotion of global energy conservation and environmental protection policies, the demand for Led Driver Testing Equipment will continue to grow, and the LISUN LS2090 is expected to occupy a larger market share and make greater contributions to the healthy development of the LED industry.
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